Pitman



(No Model.)

P. L. EMERSON.

PI'I'MAN.

Patented sept. 1s, 1887.'.

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lhvrrn STATES 'ATENT l FFI@ FRANK L. EMERSON, OF BRENTWOOD, CALIFORNIA.

PITMAN.

SPECIFICATION forming part of Letters Patent No. 369,846, dated September 13, 1887.

Application filed March 1l, 1887. Serial No. 230,554. (No model.)

To all whom it may concern:

Be it known thatl, FRANK L. EMERSON, a citizen of the United States, residing at Brentwood, in the county of Contra Costa and State of California, have invented a new and useful Improvement in Pitmen for Harvesters and Mowers, of which the following is a specification.

My invention relates especially to certain improvements in pitman-connections of harvesting and mowing machines, and has for its object the production ofa device wherein the pit-man is kept constantly lubricated and the wear or slack of the pitman-connection with the sickle-bar taken up, and thereby reducing the wear of the parts to a minimum in a more effective manner than has heretofore been possible.

'lo attain this end my invention lconsists in a take-up sleeve at the lower end of the pitinan-rod, which sleeve contains a lubricant. A half-round head-plate with asocket is Xed to the lower end of the pitman-rod, which closes up against the lower end of the sleeve upon a counterpart or head plate at that point and forms a clamp for the connecting or coupling pin of the sickle-bar. Set-nuts at the upper end o f the sleeve are employed to take up the slack or wear of the parts, all of which, together with the details of construction and operation, will be hereinafter described.

In the accompanying drawings, which form a part of this specification, Figurel represents a perspective View of the pitman connected to the inowerknife. Fig. 2 is a longitudinal section through pitman and sleeve. Fig. 3 is a side View of the same.

Similar letters refer to similar parts throughout the several views.

A represents the ptman-rod, which is connected to the driving mechanism in the usual manner by the forked ends AX. This rod passes through a sleeve, B, and at the lower end thereof is formed a half-disk plate, C,provided with a socket, a. The pitman-rod is made so as to be movable within the sleeve by loosening the set-nuts D DX thereon in such a manner as to draw forward the hooked end of the rod for adjustment to the sickle-bar, as shown in Fig. 3.

The sleeve B is plugged at both ends, and from the lower end extends a projection or head with a half-socket, b, which half-socket and head correspond with the half-disk plate O and socket a, so that when the end of the pitman-rod is tightened up by the set-nuts, as shown in Fig. 2, it will closely surround or embrace the bolt or coupling connection of the sickle-bar, in which position the set-nuts at the upper end of the sleeve are tightened up, which clamps the pitman securely to the pivot or coupling pin of the sickle-bar. The sleeve contains a lubricant, which is introduced through the hole or opening c and passes out in sufficient volume to lubricate the parts through a slot or channel at the lower end of the sleeve, and thereby keeping the parts constantly well lubricated.

The two set-nuts D D work on the screwthreaded part of the pitman at the upper end of the sleeve, and by turning these checknuts the pitman can be adjusted to the couplingpin of the sickle from time to time as the parts of the connection wear away or become loosened by friction,or by reason of the slack produced by sharpening the teeth or knives of the sickle-bar from time to time.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. Inapitman-connection for liarvesters and mowers, the pitman-rod having the socketed hook, in combination with the lubricatingsleeve having a socketed end which forms a` clamp with the socketed hooks, and set or check nuts for adjusting said sleeve upon the rod, substantially as described.

2. The combination, with the pitman-rod having the socketed hook, of the lubricating sleeve provided with a channel or slot in the lower end thereof, and set or check nuts for adjusting said sleeve upon the pitman-rod, in`

the manner described.

In testimony that I claim the foregoing I have hereunto set my hand and seal.

FRANK L. EMERSON. [.L. s]

Vitnesses:

S. P. Davis,

C. W. BREWEN. 

